Device for preventing welding wire from tangling

ABSTRACT

Disclosed is a welding wire tangling-prevention device for preventing tangling of a welding wire received in a large-capacity pail pack in the form of a vertically-extending tube-shaped wound body including eccentrically-stacked continuous spiral loops, when the welding wire is drawn out from the pail pack. The device includes a ring member laid on the top surface of the tube-shaped wound body, the ring member including an outer ring having an outer diameter smaller than the inner diameter of the pail pack, and an inner ring having an outer diameter smaller than the inner diameter of the outer ring, a plurality of comb teeth extending from an inner circumferential surface of the outer ring toward the inner ring, and a plurality of comb teeth extending from an outer circumferential surface of the inner ring toward the outer ring, whereby the welding wire is drawn out between the outer and inner rings.

TECHNICAL FIELD

The present invention relates to a welding wire tangling-preventiondevice for a welding wire received in a large-capacity pail pack in theform of a tube-shaped wound body including eccentrically-stackedcontinuous spiral loops. More particularly, the present inventionrelates to a welding wire tangling-prevention device for a welding wirereceived in a large-capacity pail pack in the form of a tube-shapedwound body including eccentrically-stacked continuous spiral loops,provided with means for controlling the welding wire to be freely drawnout between alternating comb teeth while preventing subsequent loops ofthe welding wire from being lifted and tangled.

BACKGROUND ART

In order to prevent tangling of a welding wire received in alarge-capacity pail pack in the form of a tube-shaped wound bodyincluding eccentrically-stacked continuous spiral loops, various drawingdevices have been proposed. These drawing devices use an annular memberlaid on the top of the tube-shaped wound body to allow the welding wireto be drawn out via the inside or outside of the annular member.

Examples of the drawing device adapted to draw out the welding wire viathe inside of the annular member are disclosed in Korean PatentPublication No. 87-1076, Japanese Patent Laid-Open Publication No. Sho.61-183057 and Japanese Patent Laid-Open Publication No. Hei. 11-192552.When an uppermost loop of the welding wire is drawn out while beingloosened, a subsequent loop of the welding wire may be graduallyincreased in diameter due to the elasticity of the welding wire, so thatit protrudes between the outer surface of the drawing device and theinner surface of the pail pack.

Korean Patent Publication No. 87-1076 discloses an annular member havingbuffering wings for preventing the welding wire from protruding betweenthe outer surface of the annular member and the inner surface of thepail pack while allowing the welding wire to be freely lowered along theinner surface of the pail pack as the welding wire is consumed. JapanesePatent Laid-open Publication No. Sho. 61-183057 discloses a verticalstrip attached to the inner surface of the pail pack to prevent thewelding wire from protruding between the outer surface of the annularmember and the inner surface of the pail pack while allowing the weldingwire to be freely lowered along the strip. As the welding wire is freelylowered along the strip, no space is formed between the top of the woundbody and the annular member, so that it is possible to prevent tanglingof the welding wire. In particular, Japanese Patent Laid-openPublication No. Sho. 61-183057 takes into consideration the tendency ofthe welding wire to be lifted via the outside of the annular member,which thereby causes tangling of the welding wire. However, theconventional drawing devices configured to draw out the welding wire viathe inside of the annular member frequently involve the problem thatwhen the uppermost loop of the welding wire is drawn out, subsequentloops of the welding wire are drawn out by the uppermost loop, so thatthe welding wire becomes tangled. In order to solve this problem, KoreanUtility Model Publication No. 91-5819 and Japanese Patent PublicationNo. Hei. 4-133973 have proposed use of a weight adapted to be laid onthe annular member because the above-mentioned problem was considered tobe caused by an insufficient weight of the annular member. However, itis impossible for this technique to effectively control the subsequentloops of the welding wire drawn out by the uppermost loop of the weldingwire.

In particular, Japanese Patent Laid-open Publication No. Hei. 11-192552discloses a proposal in which the annular member has a reduced drawinghole so as to control the subsequent loops of the welding wire drawn outby the uppermost loop of the welding wire. However, this techniquecannot effectively control the subsequent loops of the welding wire,because the subsequent loops may be jammed in the reduced-size drawinghole, thereby frequently stopping the welding process.

Examples of the drawing device adapted to draw out the welding wire viathe outside of the annular member are disclosed in Japanese PatentLaid-open Publication Nos. Hei. 8-40642 and Hei. 9-156827. Similarly toKorean Patent Publication No. 87-1076, Japanese Patent Laid-openPublication No. Hei. 8-40642 discloses an annular member havingbuffering wings for allowing the welding wire to be freely lowered alongthe inner surface of the pail pack as the welding wire is consumed.Since the buffering wings are made of a soft material, the welding wireis allowed to be drawn out between the inner surface of the pail packand the buffering wings. Although this technique can to some extentprevent the subsequent loops of the welding wire from being drawn out bythe uppermost loop of the welding wire, other problems may occur. Thatis, the welding wire may be caught by the buffering wings so that itsdrawing resistance may be increased. In severe cases, the annular membermay be drawn out along with the welding wire.

In order to solve this problem, Japanese Patent Laid-open PublicationNo. Hei. 9-156827 has proposed an improved buffering wing. However, thistechnique cannot fully solve the above described problem

In the above-mentioned drawing devices adapted to draw out the weldingwire via the outside of the annular member, there is another problem inthat a subsequent welding wire loop may frequently be tangled whilebeing moved downward into a space centrally defined in the verticalwound body during the drawing of an uppermost loop of the welding wire.

Other conventional tangling-prevention devices are disclosed in KoreanUtility Model Laid-open Publication Nos. 92-16429 and 92-21073, andKorean Utility Model Publication No. 95-483.

Korean Utility Model Laid-open Publication No. 92-16429 discloses atangling-prevention device including a main annular member adapted to belaid on the top of a tube-shaped wound welding wire body, and anadditional annular member with a reduced size to be laid on the mainannular member around the central opening of the main annular member,thereby allowing the welding wire to be drawn out between the annularmembers. However, this tangling-prevention device cannot solve theproblem where the subsequent loops of the welding wire are undesirablydrawn out. That is, this technique has the same problem as that ofJapanese Patent Laid-open Publication No. Hei. 8-40642.

Korean Utility Model Laid-open Publication No. 92-21073 discloses anannular member having engagement steps. However, it is also difficultfor this technique to prevent the subsequent loops of the welding wirefrom tangling.

In order to prevent the subsequent loops of the welding wire from beingtangled, Korean Utility Model Publication No. 95-483 discloses atangling-prevention device including an annular member with a small sizeto be laid on the top of a tube-shaped wound welding wire body aroundthe central hole of the wound welding wire body, and another annularmember provided at its inner surface with buffering wings. In thistangling-prevention device, the welding wire is drawn out between thesmall-size annular member and the annular member provided with thebuffering wings. Although the buffering wings more or less effectivelyserve to prevent the subsequent loops of the welding wire from beingdrawn out by the uppermost loop of the welding wire, it is impossible tocompletely prevent such undesirable drawing of the subsequent weldingwire loops. Furthermore, there is a problem in that since there is aspace between the buffering wings and the top of the wound welding wirebody, the loops of the welding wire may be lifted in the space, so thatthey may become tangled.

DISCLOSURE OF THE INVENTION

Therefore, the present invention has been made in view of theabove-mentioned problems involved with the prior art, and an object ofthe invention is to provide a welding wire tangling-prevention devicefor a welding wire received in a large-capacity pail pack in the form ofa tube-shaped wound body including eccentrically-stacked continuousspiral loops, provided with means for controlling the welding wire to befreely drawn out among alternating comb teeth while preventingsubsequent loops of the welding wire from being lifted and tangled,thereby being capable of allowing the welding process to be moreconveniently carried out, and achieving an improvement in the efficiencyof the welding process.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1 a to 1 c illustrate a welding wire tangling-prevention deviceaccording to a first embodiment of the present invention, respectively,

FIG. 1 a is a perspective view illustrating a plurality of comb teethhaving a vertical strip structure while being alternately arranged,

FIG. 1 b is a cross-sectional view corresponding to FIG. 1 a, and

FIG. 1 c is a cross-sectional view illustrating a modification in whichthe comb teeth having the vertical strip structure are inclined whilebeing alternately arranged;

FIGS. 2 a to 2 c illustrate a modification of the first embodiment ofthe present invention, respectively,

FIG. 2 a is a perspective view illustrating a plurality of comb teethhaving a horizontal strip structure while being alternately arranged,

FIG. 2 b is a cross-sectional view corresponding to FIG. 2 a, and

FIG. 2 c is a cross-sectional view illustrating a modification in whichthe comb teeth having the horizontal strip structure are inclined whilebeing alternately arranged;

FIGS. 3 a to 3 c illustrate another modification of the first embodimentof the present invention, respectively,

FIG. 3 a is a perspective view illustrating a plurality of comb teethhaving a horizontal strip structure, the comb teeth being mounted to theupper surface of an outer ring and the lower surface of an inner ringwhile being alternately arranged, respectively,

FIG. 3 b is a cross-sectional view corresponding to FIG. 3 a, and

FIG. 3 c is a cross-sectional view illustrating a modification in whichthe comb teeth having the horizontal strip structure are inclined whilebeing alternately arranged;

FIGS. 4 a to 4 c illustrate another modification of the first embodimentof the present invention, respectively,

FIG. 4 a is a perspective view illustrating a plurality of comb teethhaving a horizontal strip structure, the comb teeth being mounted to theupper surface of an outer ring and the upper surface of an inner ringwhile being alternately arranged, respectively,

FIG. 4 b is a cross-sectional view corresponding to FIG. 4 a, and

FIG. 4 c is a cross-sectional view illustrating a modification in whichthe comb teeth having the horizontal strip structure are inclined whilebeing alternately arranged;

FIGS. 5 a and 5 b illustrate another modification of the firstembodiment of the present invention, respectively,

FIG. 5 a is a perspective view illustrating a plurality of comb teethhaving a vertical strip structure and forming a desired acute angle inthe drawing direction of a welding wire with respect to respective outerand inner rings while being alternately arranged, and

FIG. 5 b is a cross-sectional view corresponding to FIG. 5 a;

FIGS. 6 a and 6 b illustrate another modification of the firstembodiment of the present invention, respectively,

FIG. 6 a is a perspective view illustrating a plurality of comb teethhaving a vertical strip structure, forming a desired acute angle in thedrawing direction of a welding wire with respect to respective outer andinner rings, and forming a desired acute angle with respect to the topsurface of a tube-shaped wound body of the welding wire while beingalternately arranged, and

FIG. 6 b is a cross-sectional view corresponding to FIG. 6 a;

FIGS. 7 a to 7 c illustrate another modification of the first embodimentof the present invention, respectively,

FIG. 7 a is a perspective view illustrating a plurality of comb teethhaving a thin brush structure while being alternately arranged,

FIG. 7 b is a cross-sectional view corresponding to FIG. 7 a, and

FIG. 7 c is a cross-sectional view illustrating a modification in whichthe comb teeth having the thin brush structure are inclined while beingalternately arranged;

FIGS. 8 a to 8 c illustrate another modification of the first embodimentof the present invention, respectively,

FIG. 8 a is a perspective view illustrating a plurality of comb teethhaving a thin brush structure and forming a desired acute angle in thedrawing direction of a welding wire with respect to respective outer andinner rings while being alternately arranged,

FIG. 8 b is a cross-sectional view corresponding to FIG. 8 a, and

FIG. 8 c is a cross-sectional view illustrating a modification in whichthe comb teeth having the thin brush structure are inclined while beingalternately arranged;

FIGS. 9 a to 9 c illustrate a welding wire tangling-prevention deviceaccording to a second embodiment of the present invention, respectively,

FIG. 9 a is a perspective view illustrating a plurality of comb teethhaving a vertical strip structure while being alternately arranged, andguides formed at respective lower surfaces of outer and inner rings,

FIG. 9 b is a cross-sectional view corresponding to FIG. 9 a, and

FIG. 9 c is a cross-sectional view illustrating a modification in whichthe comb teeth having the vertical strip structure are inclined whilebeing alternately arranged;

FIGS. 10 a to 10 c illustrate a modification of the second embodiment ofthe present invention, respectively,

FIG. 10 a is a perspective view illustrating a plurality of comb teethhaving a horizontal strip structure while being alternately arranged,and guides provided with steps formed at respective lower surfaces ofouter and inner rings,

FIG. 10 b is a cross-sectional view corresponding to FIG. 10 a, and

FIG. 10 c is a cross-sectional view illustrating a modification in whichthe comb teeth having the horizontal strip structure are inclined whilebeing alternately arranged;

FIGS. 11 a and 11 b illustrate another modification of the secondembodiment of the present invention, respectively,

FIG. 11 a is a perspective view illustrating a plurality of comb teethhaving a vertical strip structure, forming a desired acute angle in thedrawing direction of a welding wire with respect to respective outer andinner rings, and forming a desired acute angle with respect to the topsurface of a tube-shaped wound body of the welding wire while beingalternately arranged, and guides provided with steps formed atrespective lower surfaces of outer and inner rings, and

FIG. 11 b is a cross-sectional view corresponding to FIG. 11 a;

FIGS. 12 a to 12 c illustrate another modification of the secondembodiment of the present invention, respectively,

FIG. 12 a is a perspective view illustrating a plurality of comb teethhaving a thin brush structure while being alternately arranged, andguides provided with steps formed at respective lower surfaces of outerand inner rings, and

FIG. 12 b is a cross-sectional view corresponding to FIG. 12 a, and

FIG. 12 c is a cross-sectional view illustrating a modification in whichthe comb teeth having the thin brush structure are inclined while beingalternately arranged;

FIGS. 13 a to 13 c illustrate another modification of the secondembodiment of the present invention, respectively,

FIG. 13 a is a perspective view illustrating a plurality of comb teethhaving a thin brush structure and forming a desired acute angle in thedrawing direction of a welding wire with respect to respective outer andinner rings while being alternately arranged, and guides provided withsteps formed at respective lower surfaces of outer and inner rings, and

FIG. 13 b is a cross-sectional view corresponding to FIG. 13 a, and

FIG. 13 c is a cross-sectional view illustrating a modification in whichthe comb teeth having the thin brush structure are inclined while beingalternately arranged;

FIGS. 14 a and 14 b illustrate a welding wire tangling-prevention deviceaccording to a third embodiment of the present invention, respectively,

FIG. 14 a is a perspective view illustrating a ring member provided withcovers surrounding outer and inner rings, and a plurality of comb teethhaving a vertical strip structure formed between the outer and innerrings, and

FIG. 14 b is a cross-sectional view corresponding to FIG. 14 a;

FIG. 15 is a view illustrating the operation of the welding wiretangling prevention device according to the present invention to drawout the welding wire; and

FIG. 16 is a sectional view schematically illustrating an application ofthe welding wire tangling prevention device of the present invention toa pail back using an inner pipe.

BEST MODE FOR CARRYING OUT THE INVENTION

In accordance with one aspect, the present invention provides a weldingwire tangling-prevention device for preventing tangling of a weldingwire received in a large-capacity pail pack in the form of avertically-extending tube-shaped wound body includingeccentrically-stacked continuous spiral loops, when the welding wire isdrawn out from the pail pack, comprising:

-   -   a ring member laid on a top surface of the tube-shaped wound        body, the ring member including an outer ring having an outer        diameter smaller than an inner diameter of the pail pack, and an        inner ring having an outer diameter smaller than an inner        diameter of the outer ring;    -   a plurality of first comb teeth extending from an inner        circumferential surface of the outer ring toward the inner ring;        and    -   a plurality of second comb teeth extending from an outer        circumferential surface of the inner ring toward the outer ring,    -   whereby the welding wire is drawn out between the outer and        inner rings.

In accordance with another aspect, the present invention provides awelding wire tangling-prevention device for preventing tangling of awelding wire received in a large-capacity pail pack in the form of avertically-extending tube-shaped wound body includingeccentrically-stacked continuous spiral loops, when the welding wire isdrawn out from the pail pack, comprising:

-   -   a ring member laid on a top surface of the tube-shaped wound        body, the ring member including an outer ring having an outer        diameter smaller than an inner diameter of the pail pack, and an        inner ring having an outer diameter smaller than an inner        diameter of the outer ring;    -   a plurality of first comb teeth extending from an inner        circumferential surface of the outer ring toward the inner ring;    -   a plurality of second comb teeth extending from an outer        circumferential surface of the inner ring toward the outer ring;        and    -   first and second guides for minimizing a drawing resistance of        the welding wire drawn out between the outer and inner rings,        the first and second guides extending radially from respective        lower surfaces of the outer and inner rings to form annular        steps extending by a desired length between the outer and inner        rings, respectively.

In accordance with another aspect, the present invention provides awelding wire tangling-prevention device for preventing tangling of awelding wire received in a large-capacity pail pack in the form of avertically-extending tube-shaped wound body includingeccentrically-stacked continuous spiral loops, when the welding wire isdrawn out from the pail pack, comprising:

-   -   a ring member laid on a top surface of the tube-shaped wound        body, the ring member including an outer ring having an outer        diameter smaller than an inner diameter of the pail pack, an        inner ring having an outer diameter smaller than an inner        diameter of the outer ring, and first and second covers        respectively surrounding the outer and inner rings;    -   a plurality of first comb teeth having a thin brush structure,        the first comb teeth surrounding the outer ring while being        surrounded by the first cover so that they are tightly        interposed between the outer ring and the first cover, each of        the first comb teeth extending, at both ends thereof, from an        inner circumferential portion of the outer ring toward the inner        ring though an annular opening formed at an inner        circumferential portion of the first cover;    -   a plurality of second comb teeth having a thin brush structure,        the second comb teeth surrounding the inner ring while being        surrounded by the second cover so that they are tightly        interposed between the inner ring and the second cover, each of        the second comb teeth extending, at both ends thereof, from an        outer circumferential portion of the inner ring toward the outer        ring though an annular opening formed at an outer        circumferential portion of the second cover; and    -   guides for minimizing a drawing resistance of the welding wire        drawn between the first and second comb teeth, the guides        comprising lips respectively protruded by a desired length from        the first and second covers of the outer and inner rings around        the annular openings provided at the first and second covers        along the first and second comb teeth.

Now, preferred embodiments of the present invention will be described indetail with reference to the annexed drawings.

Referring to FIG. 1 a, a welding wire tangling-prevention deviceaccording to a first embodiment of the present invention is illustrated.The welding wire tangling-prevention device, which is denoted by thereference numeral 1, serves to prevent tangling of a welding wire 110received in a large-capacity pail pack 100 in the form of a verticaltube including eccentrically-stacked continuous spiral loops, when thewelding wire 110 is drawn out from the pail pack 100.

The welding wire tangling-prevention device 1 of the present inventionincludes a ring member 11 laid on the top of the tube-shaped wound body111, as a means for controlling the welding wire 110 from tangling whilebeing drawn out from the pail pack 100.

The ring member 11 includes an outer ring 11 a having an outer diametersmaller than the inner diameter of the pail pack 100, and an inner ring11 b having an outer diameter smaller than the inner diameter of theouter ring 11 a. The outer ring 11 a has a plurality of comb teeth 12 aextending from the inner circumferential surface of the outer ring 11 atoward the inner ring 11 b. Also, the inner ring 11 b has a plurality ofcomb teeth 12 b extending from the outer circumferential surface of theinner ring 11 b toward the outer ring 11 a.

The welding wire 110 can be freely drawn out from a gap defined betweenthe outer ring 11 a and the inner ring 11 b.

Since the welding wire 110 is freely drawn out between the outer ring 11a and the inner ring 11 b while pushing those ring members 11 a and 11 bin accordance with this arrangement, it is unnecessary to use anyweight, as compared to the conventional case in which such a weight islaid on the annular member in order to increase the weight of theannular member.

The comb teeth 12 a and 12 b of the ring member 11 serve to allow thewelding wire 110 having the form of continuous spiral loops to be easilydrawn out between the outer and inner rings 11 a and 11 b by a verysmall force applied thereto as it pushes those of the comb teeth 12 aand 12 b coming into contact therewith in the drawing direction whilegradually releasing its loop shape only at its uppermost loop.

At this time, the welding wire 110 gradually releases its loops one byone from a stacked state by the ring member 11 and comb teeth 12 a and12 b. Accordingly, when an uppermost loop of the welding wire 110 isdrawn out by the drawing force, there are no problems of causingsubsequent welding wire loops to be drawn out, thereby to be tangled, asin the conventional inner or outer drawing device, or causing thewelding wire to protrude outwardly between the inner surface of the pailpack and the outer circumference of the drawing device, thereby to betangled.

The comb teeth 12 a and 12 b are elastically recovered to return totheir original positions, thereby preventing the subsequent loops of thewelding wire 110 from being lifted.

The comb teeth 12 a and 12 b are preferably made of a material having adesired flexibility and a desired elasticity so that they are easilyflexible by a drawing force applied to the welding wire 110, and thenrecoverable to their original state when the drawing force is released.

In the case of the welding wire 110, which is eccentrically stacked inthe form of continuous spiral loops, during a transportation or handlingof the welding wire 110, one or more upper ones of the loops may beinterposed between lower ones of the loops. As a result, two or moreloops of the welding wire 110 may be drawn out, so that they are liftedor tangled.

In the welding wire tangling-prevention device according to the presentinvention, however, such a phenomenon does not occur because the ringmember 11 includes the outer and inner rings 11 a and 11 b respectivelyhaving a plurality of comb teeth 12 a extending from the innercircumferential surface of the outer ring 11 a toward the inner ring 11b, and a plurality of comb teeth 12 b extending from the outercircumferential surface of the inner ring 11 b toward the outer ring 11a. That is, although one or more upper ones of the stacked loops may beundesirably interposed between lower ones of the loops, the comb teeth12 a and 12 b prevent those loops from being simultaneously drawn out.Although two or more loops of the welding wire 110 may tend to besimultaneously drawn out, the comb teeth 12 a and 12 b apply a drawingresistance to those loops, thereby preventing the welding wire 110 frombeing lifted or tangled.

During the drawing of the welding wire 110, the ring member 11 movesslightly in left and right directions as a part of its comb teeth 12 aand 12 b comes into contact with the welding wire 110. In accordancewith such movements, the ring member 11 is freely lowered,simultaneously with the consumption of the welding wire 110.

As shown in FIG. 1 b, it is preferable that the comb teeth 12 a of theouter ring 11 a have a length equal to or smaller than the length of thecomb teeth 12 b of the inner ring 11 b.

Where the comb teeth 12 a of the outer ring 11 a are longer than thecomb teeth 12 b of the inner ring 11 b, the uppermost loop of thewelding wire 110 may be lifted due to elasticity or draw out subsequentloops as it is drawn out since the comb teeth 12 a of the outer ring 11a supplies drawing resistance when one loop of the welding wire 110 isreleased and recovers from eccentrically-stacked continuous spiral loopsin the pail pack 100. Accordingly, it is more preferable that the combteeth 12 a of the outer ring 11 a are shorter than the comb teeth 12 bof the inner ring 11 b.

Preferably, the comb teeth 12 a and 12 b of the outer and inner rings 11a and 11 b have a length equal to or smaller than the difference betweenthe inner diameter of the outer ring 11 a and the outer diameter of theinner ring 11 b.

Where the comb teeth 12 a and 12 b of the outer and inner rings 11 a and11 b are longer than the difference between the inner diameter of theouter ring 11 a and the outer diameter of the inner ring 11 b, theyincrease the drawing resistance of the welding wire 110. In severecases, the outer and inner rings 11 a and 12 a may be upwardly moved bythe welding wire 110 during the drawing procedure. In order to achieve areduction in drawing resistance, it is preferable that the comb teeth 12a or 12 b each of the outer and inner rings 11 a and 11 b have a lengthequal to or smaller than the difference between the inner diameter ofthe outer ring 11 a and the outer diameter of the inner ring 11 b.

Also, it is preferable that the comb teeth 12 a and 12 b of the outerand inner rings 11 a and 11 b are alternately arranged. In accordancewith such an arrangement, the comb teeth 12 a and 12 b can cooperate tocontrol the welding wire 110 during the drawing procedure.

As shown in FIG. 1 c, the comb teeth 12 a may be upwardly inclined by adesired angle θ while extending from the outer ring 11 a toward theinner ring 11 b, whereas the comb teeth 12 b may be downwardly inclinedby the angle θ while extending from the inner ring 11 b toward the outerring 11 a. Alternatively, the comb teeth 12 a may be downwardly inclinedby the angle θ while extending from the outer ring 11 a toward the innerring 11 b, whereas the comb teeth 12 b may be upwardly inclined by theangle θ while extending from the inner ring 11 b toward the outer ring11 a.

By virtue of such an inclined structure, the comb teeth 12 b can conformto the top of the wound wire body 111 typically having an inclinedsurface. Accordingly, the welding wire 110 can be more stably drawn out.

Also, this inclined structure of the comb teeth 12 a and 12 b iseffective in that the welding wire 110 can come into contact with thecomb teeth 12 a and 12 b at a reduced angle while being drawn out,thereby reducing the drawing resistance thereof.

Also, the comb teeth 12 a and 12 b may have a horizontal structure, asshown in FIGS. 2 a and 2 b. Similarly to the case of FIG. 1, the combteeth 12 a and 12 b in this case allow the welding wire 110 having theform of continuous spiral loops to be easily drawn out between the outerand inner rings 11 a and 11 b by a very small force applied thereto asit pushes those of the comb teeth 12 a and 12 b coming into contacttherewith in the drawing direction while gradually releasing its loopshape only at its uppermost loop.

In this case, as shown in FIG. 2 c, the comb teeth 12 a and 12 b may bealternately arranged while being inclined by a desired angle θ betweenthe outer ring 11 a and toward the inner ring 11 b.

By virtue of such an inclined structure, the comb teeth 12 b can conformto the top of the wound wire body 111 having an inclined surface.Accordingly, the welding wire 110 can be more stably drawn out. Also,this inclined structure of the comb teeth 12 a and 12 b is effective inthat the welding wire 110 can come into contact with the comb teeth 12 aand 12 b at a reduced angle while being drawn out, thereby reducing thedrawing resistance thereof.

In accordance with the first embodiment of the present invention, thecomb teeth 12 a and 12 b may also have a flat or horizontal stripstructure, as shown in FIGS. 3 a and 3 b. In this case, the comb teeth12 a and 12 b are manufactured separately from the outer and inner rings11 a and 11 b, respectively. The comb teeth 12 a and 12 b are fixedlymounted to the upper surface of the outer ring 12 a and the lowersurface of the inner ring 12 b by means of set screws 15, respectively.The mounting of the comb teeth 12 a and 12 b to respective outer andinner rings 11 a and 11 b may be achieved using fitting grooves andprotrusions of course, the comb teeth 12 a and 12 b may be integrallyformed with respective outer and inner rings 11 a and 11 b using amolding process. In either case, the comb teeth 12 a and 12 b arealternately arranged. In accordance with this modified structure, thecomb teeth 12 a and 12 b are spaced apart from each other by a desireddistance, so that the welding wire 110 can be easily drawn out betweenthe outer and inner rings 11 a and 11 b even by a smaller force appliedthereto as it sequentially passes the comb teeth 12 a and 12 b.

Thus, the welding wire 110 having the form of continuous spiral loops iseasily drawn out while gradually releasing its loop shape only at itsuppermost loop as it passes the comb teeth 12 a and 12 b.

As shown in FIG. 3 c, the comb teeth 12 a and 12 b may be alternatelyarranged while being inclined by a desired angle θ between the outerring 11 a and the inner ring 11 b. In the illustrated case, the outerand inner rings 11 a and 11 b are formed to have surfaces inclined bythe angle θ respectively. The comb teeth 12 a and 12 b are mounted torespective inclined surfaces of the outer and inner rings 11 a and 11 bso that they are inclined by the angle θ.

In this case, the inclined comb teeth 12 b can conform to the top of thewound wire body 111 having an inclined surface. Accordingly, the weldingwire 110 can be more stably drawn out. Also, this inclined structure ofthe comb teeth 12 a and 12 b is effective in that the welding wire 110can come into contact with the comb teeth 12 a and 12 b at a reducedangle while being drawn out, thereby reducing the drawing resistancethereof.

In accordance with the first embodiment of the present invention, thecomb teeth 12 a and 12 b may be fixedly mounted to the upper surface ofthe outer ring 12 a and the lower surface of the inner ring 12 b via setscrews 15 or fitting grooves and protrusions, respectively, as shown inFIGS. 4 a and 4 b. Of course, the comb teeth 12 a and 12 b may beintegrally formed with respective outer and inner rings 11 a and 11 busing a molding process. In either case, the comb teeth 12 a and 12 bare alternately arranged while being in a horizontal state.

The modified structure obtains the same function and effect as those ofFIGS. 3 a and 3 b. As shown in FIG. 4 c, the comb teeth 12 a and 12 bmay be alternately arranged while being inclined by a desired angle θbetween the outer ring 11 a and the inner ring 11 b. In this case, thesame effect as that of FIG. 3 c is obtained.

The comb teeth 12 a and 12 b may form a desired acute angle in thedrawing direction of the welding wire 110 with respect to respectiveouter and inner rings 11 a and 11 b, as shown in FIG. 5 a. In accordancewith such a structure, the comb teeth 12 a and 12 b are easily flexiblein the drawing direction when the welding wire 110 is drawn out, therebyreducing the drawing and supply resistance of the welding wire 110.

The welding wire 110 may be wound in the left or right direction in thepail pack 100. The present invention can be suitably used, irrespectiveof the winding direction of the welding wire 110. That is, the ringmember 11 can be used in a normal state or in an inverted state inaccordance with the winding direction of the welding wire 110.Accordingly, it is possible to reduce the drawing and supply resistanceof the welding wire 110, irrespective of the winding direction of thewelding wire 110.

The comb teeth 12 a and 12 b are easily flexible and recoverable becausethey have a strip shape extending in horizontal and vertical directions.Accordingly, it is possible to effectively control subsequent loops ofthe welding wire 110.

In accordance with the first embodiment of the present invention, asshown in FIGS. 6 a and 6 b, the comb teeth 12 a and 12 b may have avertical structure while forming a desired acute angle in the drawingdirection of the welding wire 110 with respect to respective outer andinner rings 11 a and 11 b, and forming a desired acute angle withrespect to the top surface of the tube-shaped wound body 111. Inaccordance with such a structure, advantageous effects are provided.

That is, this structure allows the comb teeth 12 a and 12 b to be easilyflexible in the drawing direction of the welding wire 110 during thewire drawing procedure, thereby reducing the drawing and supplyresistance of the welding wire 110. Also, it is possible to prevent theloops of the welding wire 110 from being lifted because the outer andinner rings 11 a and 10 b, and the strip-shaped comb teeth 12 a and 12 brespectively coupled to the outer and inner rings 11 a and 11 b applytheir weights to the top surface of the tube-shaped wound body 111. Aseparate pressing means (not shown) may be provided in order to preventthe loops of the tube-shaped wound body 111 from being tangled duringthe transportation or handling of the wound body 111.

In accordance with the first embodiment of the present invention,another comb structure may be implemented in which comb teeth 12 a′ and12 b′ respectively corresponding to the comb teeth 12 a and 12 b have athin brush structure, as shown in FIGS. 7 a and 7 b.

By virtue of such a thin brush structure, the comb teeth 12 a′ and 12 b′are easily flexible and recoverable. Since the flexibility of the combteeth 12 a′ and 12 b′ is very high, the drawing and supply resistance ofthe welding wire 110 can be reduced to a minimum value. In particular,the comb teeth 12 a′ and 12 b′ have the form of feelers, so that theycan effectively control subsequent loops of the welding wire 110.

Also, the comb teeth 12 a′ and 12 b′ may be alternately arranged whilebeing inclined by a desired angle θ between the outer ring 11 a and theinner ring 11 b, as shown in FIG. 7 c. That is, the comb teeth 12 a′ maybe upwardly inclined by the angle θ while extending from the outer ring11 a toward the inner ring 11 b, whereas the comb teeth 12 b′ may bedownwardly inclined by the angle θ while extending from the inner ring11 b toward the outer ring 11 a. Alternatively, the comb teeth 12 a′ maybe downwardly inclined by the angle θ while extending from the outerring 11 a toward the inner ring 11 b, whereas the comb teeth 12 b′ maybe upwardly inclined by the angle θ while extending from the inner ring11 b toward the outer ring 11 a.

By virtue of such an inclined structure, the comb teeth 12 b′ canconform to the top of the wound wire body 111 having an inclinedsurface. Accordingly, the welding wire 110 can be more stably drawn out.Also, this inclined structure of the comb teeth 12 a′ and 12 b′ iseffective in that the welding wire 110 can come into contact with thecomb teeth 12 a′ and 12 b′ at a reduced angle while being drawn out,thereby reducing the drawing resistance thereof.

The comb teeth 12 a′ and 12 b′ may form a desired acute angle in thedrawing direction of the welding wire 110 with respect to respectiveouter and inner rings 11 a and 11 b, as shown in FIGS. 8 a to 8 c. Inaccordance with such a structure, the comb teeth 12 a′ and 12 b′ aremore easily flexible in the drawing direction when the welding wire 110is drawn out, thereby reducing the drawing and supply resistance of thewelding wire 110 to a lower value.

In this case, the comb teeth 12 a′ and 12 b′ may be alternately arrangedwhile being inclined by a desired angle θ between the outer ring 11 aand the inner ring 11 b, as shown in FIG. 8 c. That is, the comb teeth12 a′ may be upwardly inclined by the angle θ while extending from theouter ring 11 a toward the inner ring 10 b, whereas the comb teeth 12 b′may be downwardly inclined by the angle θ while extending from the innerring 11 b toward the outer ring 11 a. Alternatively, the comb teeth 12a′ may be downwardly inclined by the angle θ while extending from theouter ring 11 a toward the inner ring 11 b, whereas the comb teeth 12 b′may be upwardly inclined by the angle θ while extending from the innerring 11 b toward the outer ring 11 a.

In this case, the same effect as that of FIG. 7 c is obtained.

The welding wire tangling-prevention device 1 according to the firstembodiment of the present invention has been described with reference toFIGS. 3 a to 4 c as having a configuration in which the comb teeth 12 aand 12 b (or 12 a′ and 12 b′) are manufactured separately from the outerand inner rings 11 a and 11 b, and fixedly mounted to the upper surfaceof the outer ring 12 a and the lower surface of the inner ring 12 b bymeans of the set screws 15, respectively. However, superior effects areprovided where the comb teeth 12 a and 12 b (or 12 a′ and 12 b′) areintegrally formed with respective outer and inner rings 11 a and 11 b inaccordance with an injection molding process.

Such an integral structure is advantageous in that it can be easilymanufactured by mass production. It is preferable to manufacture thisstructure using a material such as a synthetic resin because the combteeth 12 a and 12 b (or 12 a′ and 12 b′) should be easily flexible andelastically recoverable while being resistant to breakage or disassemblyduring the use thereof.

In this case, the welding wire tangling-prevention device 1 can exhibitreduced moisture absorption and reduced deterioration even afterprolonged use. Also, there is no formation of scratches on the surfaceof the welding wire 110 or attachment of foreign matters to thatsurface. Accordingly, the supply of the welding wire 110 is nothindered.

Preferably, the ring member 11 is composed of two or more identicalelements. In this case, superior effects are provided. In the case ofthe ring member 11 having an integral structure, there is a problem inthat a mold having a very large size should be used. However, where thering member 11 is composed of two or more identical elements, it ispossible to easily dispose of the used ring member 11 afterdisassembling it. It is also possible to effectively use the space forstoring the ring member 11 for re-use and re-utilization thereof.

Referring to FIGS. 9 a and 9 b, a welding wire tangling-preventiondevice according to a second embodiment of the present invention isillustrated. The welding wire tangling-prevention device, which isdenoted by the reference numeral 1′, additionally includes guides 11 cand 11 d for minimizing the drawing resistance of the welding wire 110,as compared to the first embodiment of the present invention.

In accordance with the second embodiment of the present invention, theguides 11 c and 11 d extend radially from respective lower surfaces ofthe outer and inner rings 11 a and 11 b to in order to form annularsteps extending by a desired length between the outer and inner rings 11a and 11 b, respectively. The guides 11 c and 11 d may be integrallyformed with respective outer and inner rings 11 a and 11 b using aninjection molding process. Alternatively, the guides 11 c and 11 d maycomprise separate annular members, respectively. In the latter case, theguides 11 c and 11 d are mounted to the outer and inner rings 12 a and12 b by means of set screws (not shown), respectively. The mounting ofthe guides 11 c and 11 d to respective outer and inner rings 11 a and 11b may be achieved using fitting grooves and protrusions (not shown).

The guide 11 c formed at the lower surface of the outer ring 11 a has aninner diameter smaller than the inner diameter of the outer ring 11 a,whereas the guide 11 d formed at the lower surface of the inner ring 11b has an outer diameter larger than the outer diameter of the inner ring11 b. Accordingly, the guides 11 c and 11 d prevent the loops of thewelding wire 110 from being outwardly protruded near the circumferentialsurfaces of the outer and inner rings 11 a and 11 b as the welding wire110 comes into contact with those outer and inner rings 11 a and 11 b inan excessively pressed state. The guides 11 c and 11 d cause the weldingwire 110 to be drawn while approaching the free ends of the comb teeth12 a and 12 b coming into contact therewith, thereby minimizing thedrawing resistance of the welding wire 110 to those comb teeth 12 a and12 b.

The comb teeth 12 a of the outer ring 11 a have a length smaller thanthe length of the comb teeth 12 b of the inner ring 11 b. Such aconfiguration may also be applied to the case in which a plurality ofinclined comb teeth 12 a and 12 b having a vertical structure arealternately arranged, as shown in FIG. 9 c.

The configuration according to the second embodiment of the presentinvention may also be applied to the case in which a plurality of combteeth 12 a and 12 b having a horizontal strip structure are alternatelyarranged, as shown in FIGS. 10 a and 10 b.

In this case, guides 11 c and 11 d are formed in the form of steps atrespective lower surfaces of the outer and inner rings 11 a and 11 b.Also, the above described configuration may be applied to the case inwhich a plurality of inclined comb teeth 12 a and 12 b having ahorizontal strip structure are alternately arranged, as shown in FIG. 10c.

The configuration according to the second embodiment of the presentinvention may also be applied to the case in which a plurality of combteeth 12 a and 12 b having a vertical structure are alternately arrangedwhile forming a desired acute angle in the drawing direction of thewelding wire 110 with respect to respective outer and inner rings 11 aand 11 b, and forming a desired acute angle with respect to the topsurface of the tube-shaped wound body 111, as shown in FIGS. 11 a and 11b. In this case, guides 11 c and 11 d are formed in the form of steps atrespective lower surfaces of the outer and inner rings 11 a and 11 b.

The welding wire tangling-prevention device 1′ according to the secondembodiment of the present invention may have a configuration in which aplurality of comb teeth 12 a′ and 12 b′ having a thin brush structureare alternately arranged, as shown in FIGS. 12 a and 12 b. In this case,guides 11 c and 11 d are formed in the form of steps at respective lowersurfaces of the outer and inner rings 11.

Also, the comb teeth 12 a′ and 12 b′ may be alternately arranged whilebeing inclined by a desired angle, as shown in FIG. 12 c.

Referring to FIGS. 13 a and 13 b, a modification from the secondembodiment of the present invention is illustrated. In this case, aplurality of comb teeth 12 a′ and 12 b′ having a thin brush structureare alternately arranged while forming a desired acute angle in thedrawing direction of the welding wire 110 with respect to respectiveouter and inner rings 11 a and 11 b, as shown in FIGS. 13 a and 13 b. Inthis case, guides 11 c and 11 d are formed in the form of steps atrespective lower surfaces of the outer and inner rings 11 a and 11 b.Also, the comb teeth 12 a′ and 12 b′, which have a thin brush structure,may be alternately arranged while being inclined by a desired angle, asshown in FIG. 13 c.

As shown in FIGS. 9 a to 13 c, the guide members 11 c and 11 d providedin accordance with the second embodiment of the present invention formannular steps extending from respective lower surfaces of the outer andinner rings 11 a and 11 b by a desired length between the outer andinner rings 11 a and 11 b. Accordingly, the guides 11 c and 11 d preventthe loops of the welding wire 110 from being outwardly protruded nearthe circumferential surfaces of the outer and inner rings 11 a and 11 bbetween the comb teeth 12 a and 12 b (or 12 a′ and 12 b′) as the weldingwire 110 comes into contact with those outer and inner rings 11 a and 11b in an excessively pressed state.

The guides 11 c and 11 d cause the welding wire 110 to be drawn whileapproaching the free ends of the comb teeth 12 a and 12 b (or 12 a′ and12 b′) coming into contact therewith, thereby minimizing the drawingresistance of the welding wire 110 to those comb teeth 12 a and 12 b (or12 a′ and 12 b′).

Referring to FIGS. 14 a and 14 b, a welding wire tangling-preventiondevice according to a third embodiment of the present invention isillustrated.

As shown in FIGS. 14 a and 14 b, the welding wire tangling-preventiondevice, which is denoted by the reference numeral 1″, includes a ringmember 11″ laid on the top of the tube-shaped wound body 111. The ringmember 11″ includes an outer ring 11 a″ having an outer diameter smallerthan the inner diameter of the large-capacity pail pack 100, and aninner ring 11 b″ having an outer diameter smaller than the innerdiameter of the outer ring 11 a″. The ring member 11″ also includescovers 13 a″ and 13 b″ respectively surrounding the outer and innerrings 11 a″ and 11 b″.

A plurality of comb teeth 12 a′ having a thin brush structure areinterposed between the outer ring 11 a″ and the cover 13 a″. The combteeth 12 a′ having a thin brush structure surround the outer ring 11 a″while being surrounded by the cover 13 a″ so that they are tightlyinterposed between the outer ring 11 a″ and the cover 13 a″. Each of thecomb teeth 12 a″ extends, at both ends thereof, from the innercircumferential portion of the outer ring 11 a″ toward the inner ring 11b″ though an annular opening formed at the inner circumferential portionof the cover 13 a″.

Similarly, a plurality of comb teeth 12 b′ having a thin brush structureare interposed between the inner ring 11 b″ and the cover 13 b″. Likethe above comb teeth 12 a′, the comb teeth 12 b′ having a thin brushstructure surround the inner ring 11 b″ while being surrounded by thecover 13 b″ so that they are tightly interposed between the inner ring11 b″ and the cover 13 b″. Each of the comb teeth 12 b″ extends, at bothends thereof, from the outer circumferential portion of the inner ring11 b″ toward the outer ring 11 a″ though an annular opening formed atthe outer circumferential portion of the cover 13 b″. Preferably, thelength of each comb 12 a′ is slightly longer than the length of eachcomb 12 b″.

The welding wire tangling-prevention device also includes guides 11 c″and 11 d″ for minimizing the drawing resistance of the welding wire 110drawn between the comb teeth 12 a′ and 12 b′. The guides 11 c″ and 11 d″comprise lips respectively protruded from the covers 13 a″ and 13 b″ ofthe outer and inner rings 11 a″ and 11 b″ around the openings providedat the covers 13 a″ and 13 b″ along the comb teeth 12 a′ and 12 b′.

The lip of each guide 11 c″ or 11 d″ has a pair of lip portionsgradually spaced apart from each other while extending from theassociated cover 13 a″ or 13 b″ along the associated comb teeth 12 a′ or12 b′. Since the guides 11 c″ and 11 d″ have such an extended structure,they do not serve to hold the comb teeth 12 a′ and 12 b′ in position.The holding of the comb teeth 12 a′ and 12 b′ in position is achieved bythe covers 13 a″ and 13 b″ covering the outer and inner rings 11 a″ and11 b″, respectively.

When the welding wire 110 is drawn out, the guides 11 c″ and 11 d″ guidethe comb teeth 12 a′ and 12 b′ to face each other without resisting themotion of the comb teeth 12 a′ and 12 b′ while preventing the loops ofthe welding wire 110 from being outwardly protruded near thecircumferential surfaces of the outer and inner rings 11 a″ and 11 b″between the comb teeth 12 a′ and 12 b′.

By virtue of the guides 11 c″ and 11 d″, the welding wire 110 is drawnwhile approaching the free ends of the comb teeth 12 a′ and 12 b′ cominginto contact therewith, thereby minimizing the drawing resistance of thewelding wire 110 to those comb teeth 12 a′ and 12 b′.

In accordance with the third embodiment of the present invention, theouter and inner rings 11 a″ and 11 b″, the covers 13 a″ and 13 b″, andthe comb teeth 12 a′ and 12 b′ are preferably made of iron, so that theycan be more easily manufactured. Also, the welding wiretangling-prevention device of this embodiment more strongly presses thetube-shaped wound body 111 in the pail pack 100 by its increased weight,thereby more effectively preventing the subsequent loops of the weldingwire 110 form being lifted or drawn to be tangled. Thus, the weldingprocess can be more conveniently carried out.

Furthermore, the welding wire tangling-prevention device 1″ according tothe third embodiment of the present invention may be applicable to thestructure in which the comb teeth 12 a′ and 12 b″ are alternatelyarranged while being inclined by a desired angle θ between the outerring 11 a and the inner ring 11 b, as shown in FIG. 7 c. The weldingwire tangling-prevention device 1″ may also be applicable to thestructure in which the comb teeth 12 a′ and 12 b′ may be alternatelyarranged while forming a desired acute angle in the drawing direction ofthe welding wire 110 with respect to respective outer and inner rings 11a and lib, as shown in FIGS. 8 a to 8 c. In either case, the sameeffects as described above are obtained.

The welding wire tangling-prevention device 1″ according to the thirdembodiment of the present invention may include a plurality of fittingmembers (not shown) in place of the covers 13 a″ and 13 b″. In thiscase, the outer and inner rings 11 a″ and 11 b″ may have a square orrectangular cross section. The comb teeth 12 a′ and 12 b′ are woundaround the outer and inner rings 11 a″ and 11 b″. In this state, thefitting members having a dimension slightly larger than that of theouter rings 11″ are fitted around the outer rings 11 a″, so that thecomb teeth 12 a′ are firmly held between the outer rings 11 a′ and thefitting members fitted around the outer rings 11 a′. Similarly, thefitting members having a dimension slightly larger than that of theinner rings 11 b″ are fitted around the inner rings 11 b″, so that thecomb teeth 12 b′ are firmly held between the inner rings 11 b′ and thefitting members fitted around the inner rings 11 b′.

Although such modifications have not been shown in the drawings, theymay be readily appreciated by those skilled in the art.

Also, the welding wire tangling-prevention device of the presentinvention may be applied to both the case in which the wound body 111 isreceived in the pail pack 100 without using any inner pipe and the casein which the wound body 111 is received in the pail pack 100 using aninner pipe 140, as shown in FIG. 16.

INDUSTRIAL APPLICABILITY

In accordance with the first embodiment of the present invention, thewelding wire tangling-prevention device includes the ring member 11 as ameans for controlling the welding wire from being tangled while beingdrawn out from the pail pack. By the comb teeth 12 a and 12 b includedin the ring member 11, it is possible to prevent subsequent welding wireloops from being drawn out or lifted and tangled. Accordingly, thewelding process can be conveniently and efficiently carried out.

In accordance with the second embodiment of the present invention, it ispossible to prevent subsequent welding wire loops from being drawn outor lifted and tangled, by the ring member 11 and the comb teeth 12 a and12 b included in the ring member 11. The guides 11 c and 11 d, which areformed at respective lower surfaces of the outer and inner rings 11 aand 11 b, serve to minimize the drawing resistance of the welding wire110. Accordingly, the welding process can be conveniently andefficiently carried out.

In accordance with the third embodiment of the present invention, themanufacture of the welding wire tangling-prevention device can be moreeasily achieved. The ring member 11 and comb teeth 12 a and 12 b morestrongly press the tube-shaped wound body 111 in the pail pack 100 byits increased weight, thereby more effectively preventing the subsequentloops of the welding wire 110 form being lifted or drawn to be tangled.Thus, the welding process can be more conveniently carried out.

1. A welding wire tangling-prevention device for preventing tangling ofa welding wire (110) received in a large-capacity pail pack (100) in theform of a vertically-extending tube-shaped wound body (111) includingeccentrically-stacked continuous spiral loops, when the welding wire isdrawn out from the pail pack (100), comprising: a ring member (11) laidon a top surface of the tube-shaped wound body (111), the ring member(11) including an outer ring (11 a) having an outer diameter smallerthan an inner diameter of the pail pack (100), and an inner ring (11 b)having an outer diameter smaller than an inner diameter of the outerring (11 a); a plurality of first comb teeth (12 a) extending from aninner circumferential surface of the outer ring (11 a) toward the innerring (11 b); and a plurality of second comb teeth (12 b) extending froman outer circumferential surface of the inner ring (11 b) toward theouter ring (11 a), whereby the welding wire (110) is drawn out betweenthe outer and inner rings (11 a, 11 b).
 2. The welding wiretangling-prevention device according to claim 1, wherein the first combteeth (12 a) of the outer ring (11 a) have a length smaller than that ofthe second comb teeth (12 b) of the inner ring (11 b).
 3. The weldingwire tangling-prevention device according to claim 1, wherein the firstand second comb teeth (12 a, 12 b) are alternately arranged.
 4. Thewelding wire tangling-prevention device according to claim 1, whereineach of the first and second comb teeth (12 a, 12 b) has a flat stripstructure.
 5. The welding wire tangling-prevention device according toclaim 1, wherein each of the first and second comb teeth (12 a, 12 b)forms a desired acute angle in a drawing direction of the welding wire(110) with respect to an associated one of the outer and inner rings (11a, 11 b).
 6. The welding wire tangling-prevention device according toclaim 5, wherein each of the first and second comb teeth (12 a, 12 b)forms a desired acute angle with respect to the top surface of thetube-shaped wound body (111).
 7. The welding wire tangling-preventiondevice according to claim 1, wherein the first comb teeth (12 a) areupwardly inclined while extending from the outer ring (11 a) toward theinner ring (11 b), and the second comb teeth (12 b) are downwardlyinclined while extending from the inner ring (11 b) toward the outerring (11 a).
 8. The welding wire tangling-prevention device according toclaim 1, wherein the first comb teeth (12 a) are downwardly inclinedwhile extending from the outer ring (11 a) toward the inner ring (11 b),and the second comb teeth (12 b) are upwardly inclined while extendingfrom the inner ring (11 b) toward the outer ring (11 a).
 9. The weldingwire tangling-prevention device according to claim 1, wherein each ofthe first and second comb teeth (12 a′, 12 b′) has a thin brushstructure.
 10. The welding wire tangling-prevention device according toclaim 9, wherein each of the first and second comb teeth (12 a′, 12 b′)forms a desired acute angle in a drawing direction of the welding wire(110) with respect to an associated one of the outer and inner rings (11a, 11 b).
 11. The welding wire tangling-prevention device according toclaim 9, wherein the first and second comb teeth (12 a′, 12 b′) arealternately arranged.
 12. The welding wire tangling-prevention deviceaccording to claim 11, wherein the first comb teeth (12 a′) of the outerring (11 a) have a length smaller than that of the second comb teeth (12b′) of the inner ring (11 b).
 13. The welding wire tangling-preventiondevice according to claim 9, wherein the first comb teeth (12 a′) areupwardly inclined while extending from the outer ring (11 a) toward theinner ring (11 b), and the second comb teeth (12 b′) are downwardlyinclined while extending from the inner ring (11 b) toward the outerring (11 a).
 14. The welding wire tangling-prevention device accordingto claim 9, wherein the first comb teeth (12 a′) are downwardly inclinedwhile extending from the outer ring (11 a) toward the inner ring (11 b),and the second comb teeth (12 b′) are upwardly inclined while extendingfrom the inner ring (11 b) toward the outer ring (11 a).
 15. A weldingwire tangling-prevention device for preventing tangling of a weldingwire (110) received in a large-capacity pail pack (100) in the form of avertically-extending tube-shaped wound body (111) includingeccentrically-stacked continuous spiral loops, when the welding wire isdrawn out from the pail pack (100), comprising: a ring member (11) laidon a top surface of the tube-shaped wound body (111), the ring member(11) including an outer ring (11 a) having an outer diameter smallerthan an inner diameter of the pail pack (100), and an inner ring (11 b)having an outer diameter smaller than an inner diameter of the outerring (11 a); a plurality of first comb teeth (12 a) extending from aninner circumferential surface of the outer ring (11 a) toward the innerring (11 b); a plurality of second comb teeth (12 b) extending from anouter circumferential surface of the inner ring (11 b) toward the outerring (11 a); and first and second guides (11 c, 11 d) for minimizing adrawing resistance of the welding wire (110) drawn out between the outerand inner rings (11 a, 11 b), the first and second guides (11 c, 11 d)extending radially from respective lower surfaces of the outer and innerrings (11 a, 11 b) to form annular steps extending by a desired lengthbetween the outer and inner rings (11 a, 11 b), respectively.
 16. Thewelding wire tangling-prevention device according to claim 15, whereinthe first comb teeth (12 a) of the outer ring (11 a) have a lengthsmaller than that of the second comb teeth (12 b) of the inner ring (11b).
 17. The welding wire tangling-prevention device according to claim15, wherein the first and second comb teeth (12 a, 12 b) are alternatelyarranged.
 18. The welding wire tangling-prevention device according toclaim 15, wherein each of the first and second comb teeth (12 a, 12 b)has a flat strip structure.
 19. The welding wire tangling-preventiondevice according to claim 15, wherein each of the first and second combteeth (12 a, 12 b) forms a desired acute angle in a drawing direction ofthe welding wire (110) with respect to an associated one of the outerand inner rings (11 a, 11 b).
 20. The welding wire tangling-preventiondevice according to claim 19, wherein each of the first and second combteeth (12 a, 12 b) forms a desired acute angle with respect to the topsurface of the tube-shaped wound body (111).
 21. The welding wiretangling-prevention device according to claim 15, wherein the first combteeth (12 a) are upwardly inclined while extending from the outer ring(11 a) toward the inner ring (11 b), and the second comb teeth (12 b)are downwardly inclined while extending from the inner ring (11 b)toward the outer ring (11 a).
 22. The welding wire tangling-preventiondevice according to claim 15, wherein the first comb teeth (12 a) aredownwardly inclined while extending from the outer ring (11 a) towardthe inner ring (11 b), and the second comb teeth (12 b) are upwardlyinclined while extending from the inner ring (11 b) toward the outerring (11 a).
 23. The welding wire tangling-prevention device accordingto claim 16, wherein each of the first and second comb teeth (12 a′, 12b′) has a thin brush structure.
 24. The welding wire tangling-preventiondevice according to claim 23, wherein each of the first and second combteeth (12 a′, 12 b′) forms a desired acute angle in a drawing directionof the welding wire (110) with respect to an associated one of the outerand inner rings (11 a, 11 b).
 25. The welding wire tangling-preventiondevice according to claim 23, wherein the first and second comb teeth(12 a′, 12 b′) are alternately arranged.
 26. The welding wiretangling-prevention device according to claim 25, wherein the first combteeth (12 a′) of the outer ring (11 a) have a length smaller than thatof the second comb teeth (12 b′) of the inner ring (11 b).
 27. Thewelding wire tangling-prevention device according to claim 23, whereinthe first comb teeth (12 a′) are upwardly inclined while extending fromthe outer ring (11 a) toward the inner ring (11 b), and the second combteeth (12 b′) are downwardly inclined while extending from the innerring (11 b) toward the outer ring (11 a).
 28. The welding wiretangling-prevention device according to claim 23, wherein the first combteeth (12 a′) are downwardly inclined while extending from the outerring (11 a) toward the inner ring (11 b), and the second comb teeth (12b′) are upwardly inclined while extending from the inner ring (11 b)toward the outer ring (11 a).
 29. The welding wire tangling-preventiondevice according to claim 15, wherein the first guide (11 c) has aninner diameter smaller than an inner diameter of the outer ring (11 a),and the second guide (11 d) has an outer diameter larger than an outerdiameter of the inner ring (11 b), whereby the first and second guides(11 c, 11 d) prevent the loops of the welding wire (110) from beingoutwardly protruded near the circumferential surfaces of the outer andinner rings (11 a, 11 b) as the welding wire (110) comes into contactwith those outer and inner rings (11 a, 11 b) in an excessively pressedstate.
 30. A welding wire tangling-prevention device for preventingtangling of a welding wire (110) received in a large-capacity pail pack(100) in the form of a vertically-extending tube-shaped wound body (111)including eccentrically-stacked continuous spiral loops, when thewelding wire (110) is drawn out from the pail pack (100), comprising: aring member (11″) laid on a top surface of the tube-shaped wound body(111), the ring member (11″) including an outer ring (11 a″) having anouter diameter smaller than an inner diameter of the pail pack (100), aninner ring (11 b″) having an outer diameter smaller than an innerdiameter of the outer ring (11 a″), and first and second covers (13 a″,13 b″) respectively surrounding the outer and inner rings (11 a″, 11b″); a plurality of first comb teeth (12 a′) having a thin brushstructure, the first comb teeth (12 a′) surrounding the outer ring (11a″) while being surrounded by the first cover (13 a″) so that they aretightly interposed between the outer ring (11 a″) and the first cover(13 a″), each of the first comb teeth (12 a′) extending from an innercircumferential portion of the outer ring (11 a″) toward the inner ring(11 b″) through an annular opening formed at an inner circumferentialportion of the first cover (13 a″); a plurality of second comb teeth (12b′) having a thin brush structure, the second comb teeth (12 b′)surrounding the inner ring (11 b″) while being surrounded by the secondcover (13 b″) so that they are tightly interposed between the inner ring(11 b″) and the second cover (13 b″), each of the second comb teeth (12b′) extending from an outer circumferential portion of the inner ring(11 b″) toward the outer ring (11 a″) through an annular opening formedat an outer circumferential portion of the second cover (13 b″); andguides (11 c″, 11 d″) for minimizing a drawing resistance of the weldingwire (110) drawn between the first and second comb teeth (12 a′, 12 b′),the guides (11 c″, 11 d″) comprising lips respectively protruded by adesired length from the first and second covers (13 a″, 13 b″) of theouter and inner rings (11 a″, 11 b″) around the annular openingsprovided at the first and second covers (13 a″, 13 b″) along the firstand second comb teeth (12 a′, 12 b′).
 31. The welding wiretangling-prevention device according to claim 30, wherein the lip ofeach of the guides (11 c″, 11 d″) has a pair of lip portions graduallyspaced apart from each other while extending by a desired length from anassociated one of the first and second covers (13 a″, 13 b″) along anassociated one of the first and second comb teeth (12 a′, 12 b′). 32.The welding wire tangling-prevention device according to claim 30,wherein each of the first and second comb teeth (12 a′, 12 b′) forms adesired acute angle in a drawing direction of the welding wire (110)with respect to an associated one of the outer and inner rings (11 a″,11 b″).
 33. The welding wire tangling-prevention device according toclaim 30, wherein the first and second comb teeth (12 a′, 12 b′) arealternately arranged.